#ifndef __GAM_NODE_H__
#define __GAM_NODE_H__

#include <glib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "gam_event.h"
#include "gam_subscription.h"
#include "gam_fs.h"

G_BEGIN_DECLS

#define FLAG_NEW_NODE 1 << 5

/*
   Special monitoring modes (pflags)
*/
#define MON_MISSING 1 << 0  /* The resource is missing */
#define MON_NOKERNEL    1 << 1  /* file(system) not monitored by the kernel */
#define MON_BUSY    1 << 2  /* Too busy to be monitored by the kernel */
#define MON_WRONG_TYPE  1 << 3  /* Expecting a directory and got a file */
#define MON_ALL_PFLAGS (MON_MISSING|MON_NOKERNEL|MON_BUSY|MON_WRONG_TYPE)

typedef struct _GamNode GamNode;

typedef gboolean( *GamSubFilterFunc )( GamSubscription *sub );

struct _GamNode {
  /* the node informations proper */
  char *path;   /* The file path */
  GList *subs;    /* the list of subscriptions */
  GNode *node;    /* pointer in the tree */
  gboolean is_dir;  /* is that a directory or expected to be one */
  int flags;    /* generic flags */
  int poll_time;    /* How often this node should be polled */
  gam_fs_mon_type mon_type; /* the type of notification that should be done */

  /* what used to be stored in a separate data structure */
  int checks;
  int pflags;   /* A combination of MON_xxx flags */
  time_t lasttime;  /* Epoch of last time checking was done */
  int flow_on_ticks;  /* Number of ticks while flow control is on */
  struct stat sbuf; /* The stat() informations in last check */
};


GamNode               *gam_node_new( const char     *path,
                                     GamSubscription *initial_sub,
                                     gboolean        is_dir );

void                  gam_node_free( GamNode         *node );

GamNode               *gam_node_parent( GamNode         *node );

gboolean              gam_node_is_dir( GamNode         *node );

void                  gam_node_set_is_dir( GamNode         *node,
    gboolean        is_dir );

const char  *gam_node_get_path( GamNode         *node );

GList                *gam_node_get_subscriptions( GamNode         *node );

gboolean              gam_node_add_subscription( GamNode         *node,
    GamSubscription *sub );

gboolean              gam_node_remove_subscription( GamNode         *node,
    GamSubscription *sub );

gboolean              gam_node_has_dir_subscriptions( GamNode * node );

void                  gam_node_set_node( GamNode         *node,
    GNode          *gnode );
GNode                *gam_node_get_node( GamNode         *node );

void                  gam_node_set_data( GamNode         *node,
    gpointer        data,
    GDestroyNotify  destroy );

gpointer              gam_node_get_data( GamNode         *node );

void                  gam_node_set_flag( GamNode         *node,
    int             flag );
void                  gam_node_unset_flag( GamNode         *node,
    int             flag );
gboolean              gam_node_has_flag( GamNode         *node,
    int             flag );

void                  gam_node_set_pflag( GamNode         *node,
    int             flag );
void                  gam_node_unset_pflag( GamNode         *node,
    int             flag );
gboolean              gam_node_has_pflag( GamNode         *node,
    int             flag );
void                  gam_node_set_pflags( GamNode         *node,
    int             flags );
gboolean              gam_node_has_pflags( GamNode         *node,
    int             flags );


void  gam_node_emit_event( GamNode *node, GaminEventType event );


G_END_DECLS

#endif /* __GAM_NODE_H__ */
